about pr_debug

[Real Name]

On Wed, Jun 25, 2014 at 02:09:40PM +0800, lx wrote:
> hi all:
>        I'm confused with pr_debug. My codes is:
> ###########################################
> #include <linux/module.h>
> #include <linux/kernel.h>
> 
> static int __init init_page_dir(void)
> {
>     pr_debug("Hello world\n");
>     return 0;
> }
> 
> static void __exit exit_page_dir(void)
> {
>     pr_debug("\nGoodbye now...\n\n");
> }
> 
> MODULE_LICENSE("GPL");
> module_init(init_page_dir);
> module_exit(exit_page_dir);
> ###########################################
> I make it, and insmod it. But the messages of "Hello world" don't show.
> 
> So, My question is If i want to fix it , I should set the
> *DEFAULT_MESSAGE_LOGLEVEL
> and *
> *rebuild the kernel ?*
>

https://www.kernel.org/doc/local/pr_debug.txt

> My kernel version is:2.6.18
> OS is: centOS
> 
> Thank you.

> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies